A.15.7 B.18.3 C.19.7 D.以上都不對(duì)
A.0.751 B.0.163 C.0.457 D.0.716
A.頻繁模式挖掘 B.降維 C.數(shù)據(jù)預(yù)處理 D.數(shù)據(jù)流挖掘